                                            :tense :past}}})
                    (unify c10
                           root-is-head
-                          head-is-conjugated-and-imperfect-infl
+                          head-imperfect-infl
                            {:rule "s-imperfect-nonphrasal"
                             :synsem {:aux false
                                      :cat :verb

                                           :tense :present}}})
                   (unify c10
                          root-is-head
                          head-is-conjugated-and-present-infl
                          {:rule "s-present-nonphrasal"
                           :synsem {:aux false
                                    :cat :verb

                                     :cat :verb}})
                   (unify h21a
                          root-is-comp
                          head-present-infl
                          {:rule "vp-aux"
                           :synsem {:aux true
                                    :sem {:tense :past}
